The LED’s all power up at the same time but they appear to go out of sync straight away, so they all end up flicking at different times. There is a pattern to the flicking but it isn’t obvious to look at, so it does appear random.

How to make a Laser Cut LED Tea LightAdd mood lighting to any room with these flickering LED tea lights made using our own Yellow Flickering Candle LEDs. LED tea lights are an ideal alternative to lit candles thanks to being much safer than a lit flame. The LED gives out a random flickering effect at a steady current. This tutorial shows you how to make a Christmas themed tea light using our laser cutter template.